Improvement in subsoil-plows



UNITED ASTATES' PATENT OFFICE.

VTHOMAS L. COCTDTEN, OFMADISONUOUNTY, MISSISSIPPI, ASSIGNOR TO MARTHA COTTEN, OF SAME PLAGE.

IMPROVEMENT IN` SUBSOlL-PLOWS.

spciscatioforming prt of Letters Patent No. 105,551,1aatea .Tiny i9, 1870.

To all whom 'it may concern: I

. the county of Madison-and State of Mississippi, have invented `certain new and useful Improvements in lSubsoil-Ilows; and I do hereby declare that the followingvis a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, making part of this specification, in whichi Figure 1 is atop-plan view. Fig. 2 is alonr gitudinal sectional view. Fig. 3 is atop-plan view of the arrow-head or diamond-shaped point. Fig. 4 is a top-plan view of the rear of the beam detached. Fig. 5 is a rear View of the upper section of the back brace-bar, the helve, and rung. i

The nature of my invention consists in providing the colter with a diamond-shaped or arrow-head point instead of the flat shoe` piece generally used.

My invention also consists. in providing the shank of the colter, as well as that of the bracebar with which it is connected, with Va series of holes or openings, whereby the plow-point can readily be adjusted lto any desired angle orpitch. The colter passes through a vertical slot in the beam, and its brace-bar through an opening in a metallic stirrup or cap at the rear of the same. tained at any desired point in their bearings by means of pins or bolts, the brace being further strengthened by a short arm or helve, which connects it with the rung of the handles.

The advantages -of my improvement will readily suggest themselves to all familiar with the subsoil-plow and its practical working.` 4The diamond-shaped point or arrow-head foot enters the earth or sod and breaks or bursts it with more certainty and ease to the team than any other form, acting, as it does, on the well-known principleof the wedge.

Owing to the complete system of adjustment ofthe colter `and brace-bar, as well as of the handles, the shoe can readily be held at any point or angle the plowman may desire.

To enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation.

The colter and bar are re? i i A is the beam, and B B the handles, which are all constructed in the usual manner. b b

are staples, by means of which the handles are secured to the beam. These staples are of such size as to allow of a slight play of the handles, so as to regulate the beam. The handles are further braced, in the usual manner, by the rung B. Gis the colter, and, as its name implies, is provided witha sharp cutting-edge. This colter C terminates in a diamond-shaped or arrow-head point or shoe, as clearly shown in Fig. 3.

The great advantage of this 'form over the ordinary flat shoe plate now used is, that it more readily and thoroughly' breaks the ground, owing to its wedge-.shaped form, and, besides, it enables the plow to do its work with less draft upon the team. The shank of this colter is provided with a series of holes, c c, and passes through a vertical opening, c', in the beam. It is retained at the desired point by a pin, a. The portion of the beam through which the opening is cut may be strengthenedA The shank of the brace-bar passes through an opening, d', in the stirrup or U-shaped metallic cap F, and, being provided with a series of openings, d d, is retained at any desired point by means of a suitable bolt or pin. The upper, section, D', of thebrace-bar D is bent, which enables it to enter a slot in the helve or arm E, where it 1is firmly secured by bolts e c. The rung B passes through an opening in the upper end of the helve or arm' E, and by which means the latter is. firmly held or braced. F is a stirrup or U-shaped metallic cap, and is sec-ured to the rear end of the beam by means of bolts f f, and is so attached as to -leave sufficient space'between its head and the rear end of the `.beam for the free movement of the shank of the bar D, as clearly shown in Fig. 4.

It will be observed that, from the complete system of adjustment afforded to the colter and its brace-bar, the point or shoe C' can readily be brought lto any desired angle the plowman may Wish.

The different features of my plow are constructed of such materials as practical experience has long since shown Were best adapted for the purposes designed.

Having thus fully described my invention, What I claim therein as new, and desire to secure -by Letters Patent of the United States, is-

The colter C, having a diamond-shaped or arrow-head point or shoe, C', brace-bar D,

when said bar and the colter are permanently connected, arm E, and stirrup F, when 'the same are so constructed as to render the colter and its brace adjustable, as shown, the Whole being combined and arranged substantially as described.

In testimony whereof I have signed my name to this specification in the presence of' two subscribing witnesses.

THOMAS L. GOTTEN.

Witnesses:

W. J. SMITH, G. F. TEMPLE. 

